Varifocal lens

Inactive Publication Date: 2009-07-16
SAMSUNG ELECTRO MECHANICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0013]The present invention is related to a varifo

Problems solved by technology

However, the camera module having the various advanced functions as described above is limited to reduce a size thereof because of sizes of lenses, and a size of a mechanical lens driving apparatus.
As a result, the camera module having the advanced functions inevitably has a large size.
So to use the c

Method used

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Examples

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Embodiment Construction

[0049]Hereinafter, certain exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0050]The matters defined in the description, such as a detailed construction and elements thereof, are provided to assist in a comprehensive understanding of the invention. Thus, it is apparent that the present invention may be carried out without those defined matters. Also, well-known functions or constructions are omitted to provide a clear and concise description of exemplary embodiments of the present invention.

[0051]FIG. 1 is a sectional view schematically illustrating a varifocal lens 1 according to an exemplary embodiment of the present invention. FIG. 2 is a sectional view schematically illustrating the varifocal lens 1 of FIG. 1 when a first actuator 20 of the varifocal lens 1 operates.

[0052]Referring to FIGS. 1 and 2, the varifocal lens 1 according to an exemplary embodiment of the present invention includes a first light trans...

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Abstract

A varifocal lens includes a hollow case having first and second sidewalls facing each other, the first and second sidewalls through which a light passes; at least one light transmission membrane partitioning an inner space of the case into at least two liquid chambers, the at least one light transmission membrane through which a light passes; at least two liquids filled in the at least two liquid chambers; at least one first operating hole formed at the first sidewall; a first actuator disposed to cover the at least one first operating hole and to pressurize the liquid contacting the first sidewall; and a controller configured to control the first actuator to change a focal distance of an optical lens consisting of the first and second sidewalls, the at least two liquids, and the at least one light transmission membrane of the case.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit under 35 U.S.C. §119(a) from Korean Patent Application No. 2008-3600 filed Jan. 11, 2008 in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference in its entirety.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to an optical lens. More particularly, the present invention relates to a varifocal lens formed so that to change a pressure to be applied to a liquid forming a liquid optical lens causes a curvature of an elastic light transmission membrane to be varied, thereby changing a focal distance thereof.[0004]2. Description of the Related Art[0005]Generally, an optical lens refers to a transparent body having at least two refractive surfaces with refractive index difference therebetween The optical lens has been widely used in various fields such as cameras, telescopes, microscopes, etc.[0006]For example, the opt...

Claims

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Application Information

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IPC IPC(8): G02B3/14G02B1/06
CPCG02B3/14
Inventor LEE, SEUNG-WANLEE, JEONG-YUBKIM, WOON-BAECHOI, SEUNG-TAE
Owner SAMSUNG ELECTRO MECHANICS CO LTD
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